Formation of h. c. p. and f. c. c. twins in an Fe-Mn-Cr-Si-Ni alloy

Journal Article · Fri Apr 01 04:00:00 EST 1994 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(94)90137-6· OSTI ID:5121471

Matsumoto, S ^[1]; Sato, A; Mori, T ^[2]

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1. Sumitomo Metal Industries Ltd., Ibaraki (Japan). Kashima Steel Works
2. Tokyo Inst. of Tech., Yokohama (Japan). Dept. of Materials Science and Engineering

Microstructure at the intersection between h.c.p. plates has been examined in a shape memory alloy Fe-Mn-Cr-Si-Ni after deformation below the T[sub 0] temperature. By analyzing the microstructure, it is found that the second shear system transmits through the other at the expense of formation of h.c.p. twins. The twinning plane is identified to be either [10[bar 1]1] or [10[bar 1]2]. An f.c.c. twin has also been found at the growing front of the two h.c.p. plates. On the basis of these observations twinning mechanisms of h.c.p. and f.c.c. phases in the Fe based SME alloy are discussed.

• OSTI ID: 5121471
• Journal Information: Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 42:4; ISSN 0956-7151; ISSN AMATEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
AUSTENITIC STEELS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CUBIC LATTICES
DATA
EXPERIMENTAL DATA
FCC LATTICES
HCP LATTICES
HEXAGONAL LATTICES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
SHAPE MEMORY EFFECT
STEELS
TWINNING